diff options
Diffstat (limited to 'comm/third_party/libgcrypt/cipher/crc-armv8-aarch64-ce.S')
| -rw-r--r-- | comm/third_party/libgcrypt/cipher/crc-armv8-aarch64-ce.S | 497 |
1 files changed, 497 insertions, 0 deletions
diff --git a/comm/third_party/libgcrypt/cipher/crc-armv8-aarch64-ce.S b/comm/third_party/libgcrypt/cipher/crc-armv8-aarch64-ce.S new file mode 100644 index 0000000000..060abdfe9a --- /dev/null +++ b/comm/third_party/libgcrypt/cipher/crc-armv8-aarch64-ce.S @@ -0,0 +1,497 @@ +/* crc-armv8-aarch64-ce.S - ARMv8/CE PMULL accelerated CRC implementation + * Copyright (C) 2019 Jussi Kivilinna <jussi.kivilinna@iki.fi> + * + * This file is part of Libgcrypt. + * + * Libgcrypt is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as + * published by the Free Software Foundation; either version 2.1 of + * the License, or (at your option) any later version. + * + * Libgcrypt is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#include "asm-common-aarch64.h" + +#if defined(__AARCH64EL__) && \ + defined(HAVE_COMPATIBLE_GCC_AARCH64_PLATFORM_AS) && \ + defined(HAVE_GCC_INLINE_ASM_AARCH64_CRYPTO) + +.cpu generic+simd+crypto + +.text + + +/* Structure of crc32_consts_s */ + +#define consts_k(idx) ((idx) * 8) +#define consts_my_p(idx) (consts_k(6) + (idx) * 8) + +/* Constants */ + +.align 6 +.Lcrc32_constants: +.Lcrc32_partial_fold_input_mask: + .byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 + .byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 +.Lcrc32_refl_shuf_shift: + .byte 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff + .byte 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff + .byte 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 + .byte 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f +.Lcrc32_shuf_shift: + .byte 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff + .byte 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff +.Lcrc32_bswap_shuf: + .byte 0x0f, 0x0e, 0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0x08 + .byte 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00 + .byte 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff + .byte 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff + + +/* + * void _gcry_crc32r_armv8_ce_bulk (u32 *pcrc, const byte *inbuf, size_t inlen, + * const struct crc32_consts_s *consts); + */ +.align 3 +.globl _gcry_crc32r_armv8_ce_bulk +ELF(.type _gcry_crc32r_armv8_ce_bulk,%function;) +_gcry_crc32r_armv8_ce_bulk: + /* input: + * x0: pcrc + * x1: inbuf + * x2: inlen + * x3: consts + */ + CFI_STARTPROC() + + GET_DATA_POINTER(x7, .Lcrc32_constants) + add x9, x3, #consts_k(5 - 1) + cmp x2, #128 + + b.lo .Lcrc32r_fold_by_one_setup + + eor v4.16b, v4.16b, v4.16b + add x4, x3, #consts_k(1 - 1) + ld1 {v4.s}[0], [x0] /* load pcrc */ + ld1 {v0.16b-v3.16b}, [x1], #64 /* load 64 bytes of input */ + sub x2, x2, #64 + ld1 {v6.16b}, [x4] + eor v0.16b, v0.16b, v4.16b + + add x4, x3, #consts_k(3 - 1) + add x5, x3, #consts_my_p(0) + +.Lcrc32r_fold_by_four: + + /* Fold by 4. */ + ld1 {v16.16b-v19.16b}, [x1], #64 /* load 64 bytes of input */ + sub x2, x2, #64 + pmull v20.1q, v0.1d, v6.1d + pmull v21.1q, v1.1d, v6.1d + pmull v22.1q, v2.1d, v6.1d + pmull v23.1q, v3.1d, v6.1d + cmp x2, #64 + pmull2 v24.1q, v0.2d, v6.2d + pmull2 v25.1q, v1.2d, v6.2d + pmull2 v26.1q, v2.2d, v6.2d + pmull2 v27.1q, v3.2d, v6.2d + eor v0.16b, v20.16b, v16.16b + eor v1.16b, v21.16b, v17.16b + eor v2.16b, v22.16b, v18.16b + eor v3.16b, v23.16b, v19.16b + eor v0.16b, v0.16b, v24.16b + eor v1.16b, v1.16b, v25.16b + eor v2.16b, v2.16b, v26.16b + eor v3.16b, v3.16b, v27.16b + b.hs .Lcrc32r_fold_by_four + + ld1 {v6.16b}, [x4] + ld1 {v5.16b}, [x5] + + cmp x2, #16 + + /* Fold 4 to 1. */ + + pmull v16.1q, v0.1d, v6.1d + pmull2 v4.1q, v0.2d, v6.2d + eor v0.16b, v16.16b, v1.16b + eor v0.16b, v0.16b, v4.16b + + pmull v16.1q, v0.1d, v6.1d + pmull2 v4.1q, v0.2d, v6.2d + eor v0.16b, v16.16b, v2.16b + eor v0.16b, v0.16b, v4.16b + + pmull v16.1q, v0.1d, v6.1d + pmull2 v4.1q, v0.2d, v6.2d + eor v0.16b, v16.16b, v3.16b + eor v0.16b, v0.16b, v4.16b + + b.lo .Lcrc32r_fold_by_one_done + b .Lcrc32r_fold_by_one + +.Lcrc32r_fold_by_one_setup: + + eor v1.16b, v1.16b, v1.16b + add x4, x3, #consts_k(3 - 1) + add x5, x3, #consts_my_p(0) + sub x2, x2, #16 + ld1 {v1.s}[0], [x0] /* load pcrc */ + ld1 {v0.16b}, [x1], #16 /* load 16 bytes of input */ + cmp x2, #16 + ld1 {v6.16b}, [x4] /* load k3k4 */ + ld1 {v5.16b}, [x5] /* load my_p */ + eor v0.16b, v0.16b, v1.16b + b.lo .Lcrc32r_fold_by_one_done + +.Lcrc32r_fold_by_one: + sub x2, x2, #16 + ld1 {v2.16b}, [x1], #16 /* load 16 bytes of input */ + pmull v3.1q, v0.1d, v6.1d + pmull2 v1.1q, v0.2d, v6.2d + cmp x2, #16 + eor v0.16b, v3.16b, v2.16b + eor v0.16b, v0.16b, v1.16b + + b.hs .Lcrc32r_fold_by_one + +.Lcrc32r_fold_by_one_done: + + cmp x2, #0 + b.eq .Lcrc32r_final_fold + + /* Partial fold. */ + + add x4, x7, #.Lcrc32_refl_shuf_shift - .Lcrc32_constants + add x5, x7, #.Lcrc32_refl_shuf_shift - .Lcrc32_constants + 16 + add x6, x7, #.Lcrc32_partial_fold_input_mask - .Lcrc32_constants + sub x8, x2, #16 + add x4, x4, x2 + add x5, x5, x2 + add x6, x6, x2 + add x8, x1, x8 + + /* Load last input and add padding zeros. */ + ld1 {v4.16b}, [x4] + eor x2, x2, x2 + ld1 {v3.16b}, [x5] + ld1 {v2.16b}, [x6] + tbl v30.16b, {v0.16b}, v4.16b + ld1 {v4.16b}, [x8] + tbl v1.16b, {v0.16b}, v3.16b + + pmull v0.1q, v30.1d, v6.1d + and v2.16b, v2.16b, v4.16b + pmull2 v31.1q, v30.2d, v6.2d + orr v2.16b, v2.16b, v1.16b + eor v0.16b, v0.16b, v31.16b + eor v0.16b, v0.16b, v2.16b + +.Lcrc32r_final_fold: + + /* Final fold. */ + + eor v2.16b, v2.16b, v2.16b /* zero reg */ + ld1 {v7.16b}, [x9] + + /* reduce 128-bits to 96-bits */ + ext v6.16b, v6.16b, v6.16b, #8 /* swap high and low parts */ + mov v1.16b, v0.16b + pmull v0.1q, v0.1d, v6.1d + ext v6.16b, v5.16b, v5.16b, #8 /* swap high and low parts */ + ext v1.16b, v1.16b, v2.16b, #8 /* high to low, high zeroed */ + eor v3.16b, v0.16b, v1.16b + + /* reduce 96-bits to 64-bits */ + eor v1.16b, v1.16b, v1.16b + ext v0.16b, v3.16b, v2.16b, #4 /* [00][00][x2][x1] */ + mov v1.s[0], v3.s[0] /* [00][00][00][x0] */ + eor v3.16b, v3.16b, v3.16b + pmull v1.1q, v1.1d, v7.1d /* [00][00][xx][xx] */ + eor v0.16b, v0.16b, v1.16b /* top 64-bit are zero */ + + /* barrett reduction */ + mov v3.s[1], v0.s[0] /* [00][00][x1][00] */ + ext v0.16b, v2.16b, v0.16b, #12 /* [??][x1][??][00] */ + pmull v1.1q, v3.1d, v5.1d /* [00][xx][xx][00] */ + pmull v1.1q, v1.1d, v6.1d /* [00][xx][xx][00] */ + eor v0.16b, v0.16b, v1.16b + + /* store CRC */ + st1 {v0.s}[2], [x0] + + ret + CFI_ENDPROC() +ELF(.size _gcry_crc32r_armv8_ce_bulk,.-_gcry_crc32r_armv8_ce_bulk;) + +/* + * void _gcry_crc32r_armv8_ce_reduction_4 (u32 *pcrc, u32 data, u32 crc, + * const struct crc32_consts_s *consts); + */ +.align 3 +.globl _gcry_crc32r_armv8_ce_reduction_4 +ELF(.type _gcry_crc32r_armv8_ce_reduction_4,%function;) +_gcry_crc32r_armv8_ce_reduction_4: + /* input: + * w0: data + * w1: crc + * x2: crc32 constants + */ + CFI_STARTPROC() + + eor v0.16b, v0.16b, v0.16b + add x2, x2, #consts_my_p(0) + eor v1.16b, v1.16b, v1.16b + ld1 {v5.16b}, [x2] + + mov v0.s[0], w0 + pmull v0.1q, v0.1d, v5.1d /* [00][00][xx][xx] */ + mov v1.s[1], w1 + mov v0.s[2], v0.s[0] /* [00][x0][x1][x0] */ + pmull2 v0.1q, v0.2d, v5.2d /* [00][00][xx][xx] */ + eor v0.16b, v0.16b, v1.16b + + mov w0, v0.s[1] + + ret + CFI_ENDPROC() +ELF(.size _gcry_crc32r_armv8_ce_reduction_4,.-_gcry_crc32r_armv8_ce_reduction_4;) + +/* + * void _gcry_crc32_armv8_ce_bulk (u32 *pcrc, const byte *inbuf, size_t inlen, + * const struct crc32_consts_s *consts); + */ +.align 3 +.globl _gcry_crc32_armv8_ce_bulk +ELF(.type _gcry_crc32_armv8_ce_bulk,%function;) +_gcry_crc32_armv8_ce_bulk: + /* input: + * x0: pcrc + * x1: inbuf + * x2: inlen + * x3: consts + */ + CFI_STARTPROC() + + GET_DATA_POINTER(x7, .Lcrc32_constants) + add x4, x7, #.Lcrc32_bswap_shuf - .Lcrc32_constants + cmp x2, #128 + ld1 {v7.16b}, [x4] + + b.lo .Lcrc32_fold_by_one_setup + + eor v4.16b, v4.16b, v4.16b + add x4, x3, #consts_k(1 - 1) + ld1 {v4.s}[0], [x0] /* load pcrc */ + ld1 {v0.16b-v3.16b}, [x1], #64 /* load 64 bytes of input */ + sub x2, x2, #64 + ld1 {v6.16b}, [x4] + eor v0.16b, v0.16b, v4.16b + ext v4.16b, v6.16b, v6.16b, #8 + tbl v0.16b, { v0.16b }, v7.16b /* byte swap */ + tbl v1.16b, { v1.16b }, v7.16b /* byte swap */ + tbl v2.16b, { v2.16b }, v7.16b /* byte swap */ + tbl v3.16b, { v3.16b }, v7.16b /* byte swap */ + + add x4, x3, #consts_k(3 - 1) + add x5, x3, #consts_my_p(0) + +.Lcrc32_fold_by_four: + + /* Fold by 4. */ + ld1 {v16.16b-v19.16b}, [x1], #64 /* load 64 bytes of input */ + sub x2, x2, #64 + tbl v16.16b, { v16.16b }, v7.16b /* byte swap */ + tbl v17.16b, { v17.16b }, v7.16b /* byte swap */ + tbl v18.16b, { v18.16b }, v7.16b /* byte swap */ + tbl v19.16b, { v19.16b }, v7.16b /* byte swap */ + cmp x2, #64 + pmull2 v20.1q, v0.2d, v4.2d + pmull2 v21.1q, v1.2d, v4.2d + pmull2 v22.1q, v2.2d, v4.2d + pmull2 v23.1q, v3.2d, v4.2d + pmull v24.1q, v0.1d, v4.1d + pmull v25.1q, v1.1d, v4.1d + pmull v26.1q, v2.1d, v4.1d + pmull v27.1q, v3.1d, v4.1d + eor v0.16b, v20.16b, v16.16b + eor v1.16b, v21.16b, v17.16b + eor v2.16b, v22.16b, v18.16b + eor v3.16b, v23.16b, v19.16b + eor v0.16b, v0.16b, v24.16b + eor v1.16b, v1.16b, v25.16b + eor v2.16b, v2.16b, v26.16b + eor v3.16b, v3.16b, v27.16b + b.hs .Lcrc32_fold_by_four + + ld1 {v6.16b}, [x4] + ld1 {v5.16b}, [x5] + ext v6.16b, v6.16b, v6.16b, #8 + ext v5.16b, v5.16b, v5.16b, #8 + + cmp x2, #16 + + /* Fold 4 to 1. */ + + pmull2 v16.1q, v0.2d, v6.2d + pmull v4.1q, v0.1d, v6.1d + eor v0.16b, v16.16b, v1.16b + eor v0.16b, v0.16b, v4.16b + + pmull2 v16.1q, v0.2d, v6.2d + pmull v4.1q, v0.1d, v6.1d + eor v0.16b, v16.16b, v2.16b + eor v0.16b, v0.16b, v4.16b + + pmull2 v16.1q, v0.2d, v6.2d + pmull v4.1q, v0.1d, v6.1d + eor v0.16b, v16.16b, v3.16b + eor v0.16b, v0.16b, v4.16b + + b.lo .Lcrc32_fold_by_one_done + b .Lcrc32_fold_by_one + +.Lcrc32_fold_by_one_setup: + + eor v1.16b, v1.16b, v1.16b + add x4, x3, #consts_k(3 - 1) + add x5, x3, #consts_my_p(0) + ld1 {v1.s}[0], [x0] /* load pcrc */ + sub x2, x2, #16 + ld1 {v0.16b}, [x1], #16 /* load 16 bytes of input */ + ld1 {v6.16b}, [x4] /* load k3k4 */ + ld1 {v5.16b}, [x5] /* load my_p */ + eor v0.16b, v0.16b, v1.16b + cmp x2, #16 + ext v6.16b, v6.16b, v6.16b, #8 /* swap high and low parts */ + ext v5.16b, v5.16b, v5.16b, #8 /* swap high and low parts */ + tbl v0.16b, { v0.16b }, v7.16b /* byte swap */ + b.lo .Lcrc32_fold_by_one_done + +.Lcrc32_fold_by_one: + sub x2, x2, #16 + ld1 {v2.16b}, [x1], #16 /* load 16 bytes of input */ + pmull2 v3.1q, v0.2d, v6.2d + tbl v2.16b, { v2.16b }, v7.16b /* byte swap */ + pmull v1.1q, v0.1d, v6.1d + cmp x2, #16 + eor v0.16b, v3.16b, v2.16b + eor v0.16b, v0.16b, v1.16b + + b.hs .Lcrc32_fold_by_one + +.Lcrc32_fold_by_one_done: + + cmp x2, #0 + b.eq .Lcrc32_final_fold + + /* Partial fold. */ + + add x4, x7, #.Lcrc32_refl_shuf_shift - .Lcrc32_constants + 32 + add x5, x7, #.Lcrc32_shuf_shift - .Lcrc32_constants + 16 + add x6, x7, #.Lcrc32_partial_fold_input_mask - .Lcrc32_constants + sub x8, x2, #16 + sub x4, x4, x2 + add x5, x5, x2 + add x6, x6, x2 + add x8, x1, x8 + + /* Load last input and add padding zeros. */ + ld1 {v4.16b}, [x4] + eor x2, x2, x2 + ld1 {v3.16b}, [x5] + ld1 {v2.16b}, [x6] + tbl v30.16b, {v0.16b}, v4.16b + ld1 {v4.16b}, [x8] + tbl v1.16b, {v0.16b}, v3.16b + and v2.16b, v2.16b, v4.16b + + pmull2 v0.1q, v30.2d, v6.2d + orr v2.16b, v2.16b, v1.16b + pmull v1.1q, v30.1d, v6.1d + tbl v2.16b, {v2.16b}, v7.16b /* byte swap */ + eor v0.16b, v0.16b, v1.16b + eor v0.16b, v0.16b, v2.16b + +.Lcrc32_final_fold: + + /* Final fold. */ + + eor v2.16b, v2.16b, v2.16b /* zero reg */ + + /* reduce 128-bits to 96-bits */ + add x4, x3, #consts_k(4) + ext v3.16b, v6.16b, v6.16b, #8 /* swap high and low parts */ + eor v6.16b, v6.16b, v6.16b + mov v1.16b, v0.16b + pmull2 v0.1q, v0.2d, v3.2d + ld1 {v6.d}[1], [x4] /* load k4 */ + ext v1.16b, v2.16b, v1.16b, #8 /* low to high, low zeroed */ + eor v3.16b, v0.16b, v1.16b /* bottom 32-bit are zero */ + + /* reduce 96-bits to 64-bits */ + eor v0.16b, v0.16b, v0.16b + eor v1.16b, v1.16b, v1.16b + mov v0.s[1], v3.s[1] /* [00][00][x1][00] */ + mov v1.s[2], v3.s[3] /* [00][x3][00][00] */ + mov v0.s[2], v3.s[2] /* [00][x2][x1][00] */ + eor v3.16b, v3.16b, v3.16b + pmull2 v1.1q, v1.2d, v6.2d /* [00][xx][xx][00] */ + eor v0.16b, v0.16b, v1.16b /* top and bottom 32-bit are zero */ + + /* barrett reduction */ + mov v3.s[0], v0.s[1] /* [00][00][00][x1] */ + pmull2 v0.1q, v0.2d, v5.2d /* [00][xx][xx][xx] */ + ext v0.16b, v0.16b, v2.16b, #4 /* [00][00][xx][xx] */ + pmull v0.1q, v0.1d, v5.1d + eor v0.16b, v0.16b, v3.16b + + /* store CRC in input endian */ + rev32 v0.8b, v0.8b /* byte swap */ + st1 {v0.s}[0], [x0] + + ret + CFI_ENDPROC() +ELF(.size _gcry_crc32_armv8_ce_bulk,.-_gcry_crc32_armv8_ce_bulk;) + +/* + * void _gcry_crc32_armv8_ce_reduction_4 (u32 *pcrc, u32 data, u32 crc, + * const struct crc32_consts_s *consts); + */ +.align 3 +.globl _gcry_crc32_armv8_ce_reduction_4 +ELF(.type _gcry_crc32_armv8_ce_reduction_4,%function;) +_gcry_crc32_armv8_ce_reduction_4: + /* input: + * w0: data + * w1: crc + * x2: crc32 constants + */ + CFI_STARTPROC() + + eor v0.16b, v0.16b, v0.16b + add x2, x2, #consts_my_p(0) + eor v1.16b, v1.16b, v1.16b + ld1 {v5.16b}, [x2] + + mov v0.s[1], w0 + pmull v0.1q, v0.1d, v5.1d /* [00][xx][xx][00] */ + mov v1.s[0], w1 + pmull2 v0.1q, v0.2d, v5.2d /* [00][00][xx][xx] */ + eor v0.16b, v0.16b, v1.16b + + rev32 v0.8b, v0.8b /* Return in input endian */ + mov w0, v0.s[0] + + ret + CFI_ENDPROC() +ELF(.size _gcry_crc32_armv8_ce_reduction_4,.-_gcry_crc32_armv8_ce_reduction_4;) + +#endif |